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From "Eric Newton (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-3547) TabletServer clears cache after bulk import analysis
Date Fri, 30 Jan 2015 02:43:35 GMT
Eric Newton created ACCUMULO-3547:
-------------------------------------

             Summary: TabletServer clears cache after bulk import analysis
                 Key: ACCUMULO-3547
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3547
             Project: Accumulo
          Issue Type: Bug
          Components: tserver
    Affects Versions: 1.6.1, 1.6.0, 1.5.2, 1.5.1, 1.5.0
         Environment: Very large cluster
            Reporter: Eric Newton
            Assignee: Eric Newton
            Priority: Blocker
             Fix For: 1.6.2, 1.7.0


Tablet servers get told to analyze bulk files and hand them to other bulk importers.  Every
time it succeeds, it clears the tablet location cache.

On our large system, we load thousands of bulk files. After every cache clear, the zookeeper
needs to be consulted, followed by the root tablet, followed by the metadata tablet.  This
is putting a great deal of pressure on some constrained resources, especially the root tablet.




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